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发帖数: 298 | 1 【 以下文字转载自 Astronomy 讨论区 】
【 原文由 Staccato 所发表 】
If you enjoy watching sunsets, you have all the more reason to do so on June
10th.
By Roger W. Sinnott
During this month's annular eclipse, strategically placed observers — perhaps
on a ship crossing the Pacific Ocean — can use solar filters to view a
brilliant ring, or annulus, of sunlight as the Moon passes directly in front
of the Sun. (This won't be a total eclipse, because the Moon's angular size
isn't quite large enough to hide the Sun complet |
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